Files
rust/tests/codegen-llvm
Peter Jaszkowiak 085dff4944 stabilize new RangeFrom type and iterator
stabilizes `core::range::RangeFrom`
stabilizes `core::range::RangeFromIter`

add examples for `remainder` method on range iterators
`RangeFromIter::remainder` was not stabilized (see issue 154458)
2026-03-28 12:00:10 -06:00
..
2025-11-08 10:57:35 -07:00
2026-01-26 13:43:06 -06:00
2025-08-15 16:42:21 +00:00
2026-02-24 08:33:15 +00:00

The files here use the LLVM FileCheck framework, documented at https://llvm.org/docs/CommandGuide/FileCheck.html.

One extension worth noting is the use of revisions as custom prefixes for FileCheck. If your codegen test has different behavior based on the chosen target or different compiler flags that you want to exercise, you can use a revisions annotation, like so:

// revisions: aaa bbb
// [bbb] compile-flags: --flags-for-bbb

After specifying those variations, you can write different expected, or explicitly unexpected output by using <prefix>-SAME: and <prefix>-NOT:, like so:

// CHECK: expected code
// aaa-SAME: emitted-only-for-aaa
// aaa-NOT:                        emitted-only-for-bbb
// bbb-NOT:  emitted-only-for-aaa
// bbb-SAME:                       emitted-only-for-bbb